Resource Conflict PCI

I recently came across this problem. On boot up the bios was erroring with what looked like a conflict with the hard disk and cd rom. Booting into the bios setup everything looked ok - checked the cables and jumpers on both devices and all was ok. Bios also gave me the option of continuing to boot disregarding this error. DSL would start to load before finally halting with the message Resource Conflict PCI Bus:00 Device:0D Function:00

Googling turned up very little that seemed helpful, but one result mentioned checking the cards - sure enough it turned out that the retaining screw on my video card was loose. After making sure the card was properly seated and the retaining screw was properly tightened, I rebooted.

Like magic the bios error disappeared and DSL loaded normally.